GB1450603A - Process for the preparation of aliphatic dialdehydes - Google Patents

Process for the preparation of aliphatic dialdehydes

Info

Publication number
GB1450603A
GB1450603A GB4383174A GB4383174A GB1450603A GB 1450603 A GB1450603 A GB 1450603A GB 4383174 A GB4383174 A GB 4383174A GB 4383174 A GB4383174 A GB 4383174A GB 1450603 A GB1450603 A GB 1450603A
Authority
GB
United Kingdom
Prior art keywords
carbon atoms
acid
group
aliphatic
oct
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4383174A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rhone Poulenc SA
Original Assignee
Rhone Poulenc SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rhone Poulenc SA filed Critical Rhone Poulenc SA
Publication of GB1450603A publication Critical patent/GB1450603A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/41—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by hydrogenolysis or reduction of carboxylic groups or functional derivatives thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

1450603 Aliphatic dialdehydes RHONEPOULENC SA 9 Oct 1974 [10 Oct 1973] 43831/74 Heading C2C Aliphatic dialdehydes are prepared by reducing the corresponding acid chloride with hydrogen and a palladium catalyst, in the presence of a tertiary amide, specifically of formula in which: R<SP>1</SP> and R<SP>2</SP>, which may be identical or different, each represents a straight or branched, saturated aliphatic group having at most 6 carbon atoms, a cycloaliphatic group having 5 or 6 ring carbon atoms, or a phenyl, phenylalkyl or alkylphenyl group, the alkyl substituent of which phenyl group contains at most 4 carbon atoms, or R<SP>1</SP> and R<SP>2</SP> together form a saturated or unsaturated divalent radical having 4 or 5 carbon atoms, and R is as defined under R<SP>1</SP> and R<SP>2</SP> or represents a hydrogen atom or forms together with one of the radicals R<SP>1</SP> and R<SP>2</SP>, a divalent radical having from 3 to 5 carbon atoms. Examples prepare glutaric acid, adipic acid, suberic acid and dodecanedioic acid using dimethylacetamide or N-methylpyrrolidone as amide.
GB4383174A 1973-10-10 1974-10-09 Process for the preparation of aliphatic dialdehydes Expired GB1450603A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7336158A FR2247444B1 (en) 1973-10-10 1973-10-10

Publications (1)

Publication Number Publication Date
GB1450603A true GB1450603A (en) 1976-09-22

Family

ID=9126198

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4383174A Expired GB1450603A (en) 1973-10-10 1974-10-09 Process for the preparation of aliphatic dialdehydes

Country Status (10)

Country Link
US (1) US3996292A (en)
JP (1) JPS5848528B2 (en)
BE (1) BE820876A (en)
CH (1) CH584673A5 (en)
DE (1) DE2448394A1 (en)
FR (1) FR2247444B1 (en)
GB (1) GB1450603A (en)
IT (1) IT1022763B (en)
LU (1) LU71074A1 (en)
NL (1) NL7413019A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5015780A (en) * 1989-02-02 1991-05-14 Ciba-Geigy Corporation Process for the preparation of dihalobutyraldehydes
EP2853605A1 (en) * 2013-09-30 2015-04-01 Rhodia Poliamida E Especialidades Ltda Tanning process for obtaining leather
EP2853604A1 (en) * 2013-09-30 2015-04-01 Rhodia Poliamida E Especialidades Ltda Tanning process
EP3109226A1 (en) 2015-06-25 2016-12-28 Basf Se Process for preparing vanillin

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3517066A (en) * 1968-03-22 1970-06-23 Hoffmann La Roche Rosenmund process

Also Published As

Publication number Publication date
CH584673A5 (en) 1977-02-15
JPS5848528B2 (en) 1983-10-28
JPS50111007A (en) 1975-09-01
DE2448394A1 (en) 1975-04-17
LU71074A1 (en) 1975-06-24
FR2247444A1 (en) 1975-05-09
IT1022763B (en) 1978-04-20
BE820876A (en) 1975-04-09
NL7413019A (en) 1975-04-14
FR2247444B1 (en) 1976-06-18
US3996292A (en) 1976-12-07

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee